diff --git a/src/TensorFlowNET.Core/BaseSession.cs b/src/TensorFlowNET.Core/BaseSession.cs
new file mode 100644
index 00000000..6b44b28e
--- /dev/null
+++ b/src/TensorFlowNET.Core/BaseSession.cs
@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TensorFlowNET.Core
+{
+    public class BaseSession
+    {
+        private Graph _graph;
+        private bool _opened;
+        private bool _closed;
+        private int _current_version;
+        private byte[] _target;
+        private IntPtr _session;
+
+        public BaseSession(string target = "", Graph graph = null)
+        {
+            if(graph is null)
+            {
+                _graph = ops.get_default_graph();
+            }
+            else
+            {
+                _graph = graph;
+            }
+
+            _target = UTF8Encoding.UTF8.GetBytes(target);
+            var opts = c_api.TF_NewSessionOptions();
+            var status = new Status();
+            _session = c_api.TF_NewSession(_graph.Handle, opts, status.Handle);
+
+            c_api.TF_DeleteSessionOptions(opts);
+        }
+
+        public virtual byte[] run(Tensor fetches)
+        {
+            return null;
+        }
+    }
+}
diff --git a/src/TensorFlowNET.Core/Graph.cs b/src/TensorFlowNET.Core/Graph.cs
index 5087f6f6..216db8f6 100644
--- a/src/TensorFlowNET.Core/Graph.cs
+++ b/src/TensorFlowNET.Core/Graph.cs
@@ -16,7 +16,8 @@ namespace TensorFlowNET.Core
     /// </summary>
     public class Graph
     {
-        public IntPtr handle;
+        private IntPtr _c_graph;
+        public IntPtr Handle => _c_graph;
         private Dictionary<int, Operation> _nodes_by_id;
         private Dictionary<string, Operation> _nodes_by_name;
         private Dictionary<string, int> _names_in_use;
@@ -25,7 +26,7 @@ namespace TensorFlowNET.Core
 
         public Graph(IntPtr graph)
         {
-            this.handle = graph;
+            this._c_graph = graph;
             _nodes_by_id = new Dictionary<int, Operation>();
             _nodes_by_name = new Dictionary<string, Operation>();
             _names_in_use = new Dictionary<string, int>();
diff --git a/src/TensorFlowNET.Core/Session.cs b/src/TensorFlowNET.Core/Session.cs
index b8ae6544..0755539f 100644
--- a/src/TensorFlowNET.Core/Session.cs
+++ b/src/TensorFlowNET.Core/Session.cs
@@ -4,7 +4,13 @@ using System.Text;
 
 namespace TensorFlowNET.Core
 {
-    public class Session
+    public class Session : BaseSession
     {
+        public override byte[] run(Tensor fetches)
+        {
+            var ret = base.run(fetches);
+
+            return ret;
+        }
     }
 }
diff --git a/src/TensorFlowNET.Core/c_api.cs b/src/TensorFlowNET.Core/c_api.cs
index 62d4d654..ad052e23 100644
--- a/src/TensorFlowNET.Core/c_api.cs
+++ b/src/TensorFlowNET.Core/c_api.cs
@@ -9,6 +9,8 @@ using TF_OperationDescription = System.IntPtr;
 using TF_Operation = System.IntPtr;
 using TF_Status = System.IntPtr;
 using TF_Tensor = System.IntPtr;
+using TF_Session = System.IntPtr;
+using TF_SessionOptions = System.IntPtr;
 
 using TF_DataType = Tensorflow.DataType;
 using Tensorflow;
@@ -20,6 +22,9 @@ namespace TensorFlowNET.Core
     {
         public const string TensorFlowLibName = "tensorflow";
 
+        [DllImport(TensorFlowLibName)]
+        public static unsafe extern void TF_DeleteSessionOptions(TF_SessionOptions opts);
+
         [DllImport(TensorFlowLibName)]
         public static unsafe extern TF_Operation TF_FinishOperation(TF_OperationDescription desc, TF_Status status);
 
@@ -53,6 +58,12 @@ namespace TensorFlowNET.Core
         [DllImport(TensorFlowLibName)]
         public static extern unsafe void TF_SetAttrType(TF_OperationDescription desc, string attr_name, TF_DataType value);
 
+        [DllImport(TensorFlowLibName)]
+        public static extern TF_Session TF_NewSession(TF_Graph graph, TF_SessionOptions opts, TF_Status status);
+
+        [DllImport(TensorFlowLibName)]
+        public static extern TF_SessionOptions TF_NewSessionOptions();
+
         [DllImport(TensorFlowLibName)]
         public static unsafe extern IntPtr TF_Version();
     }
diff --git a/src/TensorFlowNET.Core/ops.cs b/src/TensorFlowNET.Core/ops.cs
index a2477fee..59a2d682 100644
--- a/src/TensorFlowNET.Core/ops.cs
+++ b/src/TensorFlowNET.Core/ops.cs
@@ -20,7 +20,7 @@ namespace TensorFlowNET.Core
 
         public static unsafe IntPtr _create_c_op(Graph graph, NodeDef node_def, object inputs)
         {
-            var op_desc = c_api.TF_NewOperation(graph.handle, node_def.Op, node_def.Name);
+            var op_desc = c_api.TF_NewOperation(graph.Handle, node_def.Op, node_def.Name);
             var status = new Status();
 
             foreach (var attr in node_def.Attr)
diff --git a/test/TensorFlowNET.Examples/HelloWorld.cs b/test/TensorFlowNET.Examples/HelloWorld.cs
index 31328bb8..b3991160 100644
--- a/test/TensorFlowNET.Examples/HelloWorld.cs
+++ b/test/TensorFlowNET.Examples/HelloWorld.cs
@@ -22,6 +22,9 @@ namespace TensorFlowNET.Examples
 
             // Start tf session
             var sess = tf.Session();
+
+            // Run the op
+            sess.run(hello);
         }
     }
 }